What is a compound composed of?

Question

vera_ewing · Answer

In any pure sample of CO2, the ratio of the mass of carbon to the mass of oxygen is always the same. You can justify this ratio by the fact that compounds are composed of which of the following?

 		A.	Atoms whose masses do not change during a chemical reaction
 		B.	Atoms whose chemical properties do not change during a chemical reaction
 		C.	Different molecules which together produce the observed elemental ratios
 		D.	Identical molecules created from atoms combined in whole number ratios

abb0t · Answer

What do you need help? Let's discuss it together.

vera_ewing · Answer

It's either A or D right

zale101 · Answer

Why you think its A or D?